/* ==========================================================================
   禁漫天堂 fzqar.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base — 变量、重置、排版、通用元素
   ========================================================================== */

:root {
  --color-bg: #f4f5f7;
  --color-ink: #1f2a44;
  --color-muted: #5a6478;
  --color-accent: #d97a34;
  --color-surface: #ffffff;
  --color-line: #dfe3ea;
  --color-line-strong: #c7cdd8;
  --color-tint: #eef1f6;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 8px;
  --shell: 1160px;
  --gap: 24px;
  --shadow-card: 0 1px 2px rgba(31, 42, 68, 0.06);
  --shadow-raise: 0 4px 14px rgba(31, 42, 68, 0.1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-ink);
}

p {
  margin: 0;
}

ul,
ol,
dl,
dd {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

time,
.field-tag,
.direction-card__num,
.index-cell__num,
.entry-row__no,
.rank-item__pos,
.shortcut-item__num,
.step-item__num,
.side-steps__num,
.timeline-row__date,
.update-row__date {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

strong {
  font-weight: 600;
}

/* ==========================================================================
   layout — 骨架：body / header / nav / main / 容器 / footer
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-bg);
}

/* 顶部事实条 */
.fact-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px 24px;
  font-size: 13px;
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-line);
}

.fact-bar__text {
  margin: 0;
}

.fact-bar__nav {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--color-muted);
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background-color: var(--color-ink);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand__text {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-ink);
}

.brand:hover .brand__text {
  color: var(--color-accent);
}

/* 主导航 */
.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list__item {
  position: relative;
}

.nav-list__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 15px;
  color: var(--color-ink);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-list__link:hover {
  color: var(--color-accent);
}

.nav-list__link.is-current {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: transparent;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
}

/* 主内容 */
.site-main {
  display: block;
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.inner-main {
  padding-top: 20px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  color: var(--color-line-strong);
}

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 600;
}

/* 内页标题区 */
.page-header {
  padding-bottom: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--color-ink);
}

.page-description {
  max-width: 820px;
  margin-top: 10px;
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.8;
}

/* 通用两栏布局 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}

.page-layout__main {
  min-width: 0;
}

.page-layout__side {
  min-width: 0;
}

.layout-shell {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

/* 页脚 */
.site-footer {
  background-color: #1f2a44;
  color: #d6dbe6;
  margin-top: auto;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.site-footer__name {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
}

.site-footer__desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: #a8b1c2;
}

.site-footer__title {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.site-footer__list li + li {
  margin-top: 8px;
}

.site-footer__list a {
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  color: #c3cad8;
}

.site-footer__list a:hover {
  color: #ffffff;
}

.site-footer__bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.site-footer__copy {
  font-size: 13px;
  color: #8f99ac;
}

/* ==========================================================================
   components — 通用模块：区块标题、标签、卡片、表格、FAQ、侧栏
   ========================================================================== */

.section-head {
  margin-bottom: 20px;
}

.section-head__title {
  font-size: 22px;
  font-weight: 600;
}

.section-head__desc {
  max-width: 780px;
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
}

.section-title,
.section__title {
  font-size: 22px;
  font-weight: 600;
}

.section-lead,
.section__intro,
.section-intro {
  max-width: 780px;
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
}

.section-intro a,
.section__footnote a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.section {
  margin-bottom: 44px;
}

/* 字段标签 */
.field-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.field-tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--color-accent);
  background-color: rgba(217, 122, 52, 0.08);
  border: 1px solid rgba(217, 122, 52, 0.32);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.page-header__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* 侧栏面板 */
.side-panel {
  padding: 18px 18px 20px;
  margin-bottom: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.side-panel__title {
  font-size: 15px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.side-panel__note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-muted);
}

/* 字段速查 dl */
.field-quick {
  font-size: 14px;
}

.field-quick__name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.field-quick__desc {
  margin: 2px 0 12px;
  color: var(--color-muted);
  line-height: 1.7;
}

.field-quick__desc:last-child {
  margin-bottom: 0;
}

/* 侧栏编号步骤 */
.side-steps {
  font-size: 14px;
}

.side-steps__item {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  color: var(--color-muted);
  border-bottom: 1px dashed var(--color-line);
}

.side-steps__item:last-child {
  border-bottom: 0;
}

.side-steps__num {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--color-accent);
}

/* 相邻栏目入口 */
.next-links {
  margin-top: 8px;
}

.next-links__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
}

.next-links__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.next-links__item {
  min-width: 0;
}

.next-links__link {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 16px;
  font-size: 15px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.next-links__link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

/* FAQ 折叠项 */
.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.faq-item__question,
.faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}

.faq-item__question::-webkit-details-marker,
.faq-item__q::-webkit-details-marker {
  display: none;
}

.faq-item__question::after,
.faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-accent);
}

.faq-item[open] .faq-item__question::after,
.faq-item[open] .faq-item__q::after {
  content: "–";
}

.faq-item__answer,
.faq-item__a {
  padding: 0 18px 16px;
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
  border-top: 1px solid var(--color-line);
  padding-top: 14px;
}

/* 图片容器 */
.media-frame,
.media-figure,
.field-figure,
.hero-figure,
.timeline-row__media {
  overflow: hidden;
  background-color: var(--color-tint);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.media-frame img,
.media-figure img,
.field-figure img,
.hero-figure img,
.timeline-row__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame figcaption,
.media-figure__caption,
.field-figure__caption,
.hero-figure__caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}

/* 滚动进入增强（默认完全可见） */
.reveal {
  animation: none;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal.is-visible {
    animation: reveal-in 0.45s ease-out both;
  }
}

@keyframes reveal-in {
  from {
    transform: translateY(10px);
    opacity: 0.35;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ==========================================================================
   pages — 首页
   ========================================================================== */

.home-main {
  padding-top: 28px;
}

/* 首屏索引区 */
.hero-index {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  padding-bottom: 36px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-line);
}

.hero-index__content {
  min-width: 0;
}

.hero-index__eyebrow {
  display: inline-block;
  padding: 3px 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
  background-color: rgba(217, 122, 52, 0.08);
  border: 1px solid rgba(217, 122, 52, 0.3);
  border-radius: var(--radius-sm);
}

.hero-index__title {
  font-size: 34px;
  font-weight: 600;
  line-height: 1.3;
}

.hero-index__summary {
  max-width: 620px;
  margin-top: 14px;
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.85;
}

.hero-index__shortcuts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.shortcut-item {
  min-width: 0;
}

.shortcut-item__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: 100%;
  padding: 14px 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.shortcut-item__link:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

.shortcut-item__num {
  font-size: 12px;
  color: var(--color-accent);
}

.shortcut-item__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
}

.shortcut-item__desc {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.65;
}

.hero-index__aside {
  min-width: 0;
}

.hero-figure {
  margin-bottom: 18px;
}

.hero-figure img {
  aspect-ratio: 16 / 10;
}

.field-panel {
  padding: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.field-panel__title {
  font-size: 15px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.field-panel__row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 7px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--color-line);
}

.field-panel__row:last-child {
  border-bottom: 0;
}

.field-panel__row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.field-panel__row dd {
  color: var(--color-muted);
  line-height: 1.7;
}

.field-panel__note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-muted);
}

.field-panel__note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-media-primary {
  margin-top: 40px;
}

.content-media-primary img {
  aspect-ratio: 21 / 9;
}

.content-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}

/* 题材方向总览 */
.direction-overview {
  margin-bottom: 44px;
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.direction-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.direction-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

.direction-card__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.direction-card__num {
  font-size: 12px;
  color: var(--color-accent);
}

.direction-card__name {
  font-size: 17px;
  font-weight: 600;
}

.direction-card__feature {
  font-size: 14px;
  color: var(--color-ink);
  line-height: 1.7;
}

.direction-card__scale {
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-muted);
}

.direction-card__list {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-line);
}

.direction-card__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
}

.direction-card__item + .direction-card__item {
  border-top: 1px dashed var(--color-line);
}

.item-name {
  min-width: 0;
  color: var(--color-ink);
}

.item-field {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
}

/* 字段与收录边界摘要 */
.field-boundary {
  margin-bottom: 44px;
}

.field-boundary__columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.field-boundary__col {
  min-width: 0;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.field-boundary__subtitle {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.field-table {
  font-size: 14px;
}

.field-table__caption {
  text-align: left;
  font-size: 13px;
  color: var(--color-muted);
  padding-bottom: 8px;
}

.field-table th,
.field-table td {
  text-align: left;
  padding: 8px 10px 8px 0;
  vertical-align: top;
  border-bottom: 1px dashed var(--color-line);
}

.field-table th {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
}

.field-table td:first-child,
.field-table th:first-child {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  white-space: nowrap;
}

.field-table td {
  color: var(--color-muted);
  line-height: 1.7;
}

.field-table tbody tr:last-child td {
  border-bottom: 0;
}

.field-boundary__more {
  margin-top: 14px;
  font-size: 14px;
}

.field-boundary__more a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 更新记录速览 */
.update-brief {
  margin-bottom: 44px;
}

.update-list {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.update-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1.6fr) 110px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 13px 18px;
  font-size: 14px;
}

.update-row + .update-row {
  border-top: 1px solid var(--color-line);
}

.update-row__date {
  font-size: 13px;
  color: var(--color-muted);
}

.update-row__name {
  font-weight: 600;
  color: var(--color-ink);
}

.update-row__direction {
  font-size: 13px;
  color: var(--color-accent);
}

.update-row__field {
  font-size: 13px;
  color: var(--color-muted);
}

.update-brief__more {
  margin-top: 14px;
  font-size: 14px;
}

.update-brief__more a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 榜单参考与专题汇编 */
.rank-feature {
  margin-bottom: 44px;
}

.rank-feature__columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.rank-feature__col {
  min-width: 0;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.rank-feature__subtitle {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.rank-list {
  font-size: 14px;
}

.rank-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px dashed var(--color-line);
}

.rank-item:last-child {
  border-bottom: 0;
}

.rank-item__pos {
  font-size: 12px;
  color: var(--color-accent);
}

.rank-item__name {
  min-width: 0;
  color: var(--color-ink);
}

.rank-item__dir {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--color-muted);
}

/* 专题卡（首页榜单右栏复用 feature-cards） */
.feature-cards {
  display: grid;
  gap: 12px;
}

.feature-card {
  min-width: 0;
  padding: 14px 16px;
  background-color: var(--color-tint);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.feature-card__name {
  font-size: 15px;
  font-weight: 600;
}

.feature-card__desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.7;
}

.feature-card__link {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 站内栏目索引 */
.site-index {
  margin-bottom: 24px;
}

.site-index__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.index-cell {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
  padding: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.index-cell:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

.index-cell__num {
  font-size: 12px;
  color: var(--color-accent);
}

.index-cell__name {
  font-size: 15px;
  font-weight: 600;
}

.index-cell__desc {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ==========================================================================
   pages — 题材分类
   ========================================================================== */

.direction-bar {
  min-width: 0;
}

.direction-bar__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 84px;
}

.direction-bar__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--color-muted);
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  border-left: 3px solid transparent;
}

.direction-bar__link:hover {
  color: var(--color-ink);
  border-color: var(--color-line-strong);
  border-left-color: var(--color-accent);
}

.direction-bar__link.is-active {
  color: var(--color-accent);
  font-weight: 600;
  border-left-color: var(--color-accent);
  background-color: rgba(217, 122, 52, 0.07);
}

.category-groups {
  min-width: 0;
}

.direction-group {
  padding: 22px;
  margin-top: 22px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.direction-group__head {
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}

.direction-group__title {
  font-size: 19px;
  font-weight: 600;
}

.direction-group__desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

.direction-group__media {
  margin: 16px 0;
}

.media-frame img {
  aspect-ratio: 16 / 7;
}

.entry-list {
  margin-top: 16px;
  border-top: 1px dashed var(--color-line);
}

.entry-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1.5fr) minmax(0, 1.2fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--color-line);
}

.entry-row:last-child {
  border-bottom: 0;
}

.entry-row__no {
  font-size: 12px;
  color: var(--color-accent);
}

.entry-row__name {
  min-width: 0;
  font-weight: 600;
  color: var(--color-ink);
}

.entry-row__meta {
  min-width: 0;
  font-size: 13px;
  color: var(--color-muted);
}

.entry-row__field {
  font-size: 12px;
  color: var(--color-muted);
  white-space: nowrap;
}

/* 方向取向特征说明 */
.direction-nature {
  margin-top: 40px;
}

.nature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.nature-item {
  min-width: 0;
  padding: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.nature-item__title {
  font-size: 16px;
  font-weight: 600;
}

.nature-item__text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* 相邻栏目卡 */
.next-links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.next-card {
  min-width: 0;
  padding: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.next-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

.next-card__title {
  font-size: 16px;
  font-weight: 600;
}

.next-card__text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* ==========================================================================
   pages — 更新记录
   ========================================================================== */

.updates-timeline {
  min-width: 0;
}

.timeline-list {
  margin-top: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.timeline-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 18px;
}

.timeline-row + .timeline-row {
  border-top: 1px solid var(--color-line);
}

.timeline-row__media {
  width: 96px;
  border-radius: var(--radius-sm);
}

.timeline-row__media img {
  aspect-ratio: 4 / 3;
}

.timeline-row__body {
  min-width: 0;
}

.timeline-row__date {
  font-size: 13px;
  color: var(--color-muted);
}

.timeline-row__name {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 600;
}

.timeline-row__meta {
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-accent);
}

.timeline-row__change {
  margin-top: 4px;
  font-size: 13px;
  color: var(--color-muted);
}

.timeline-row__note {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* 记录口径侧栏 */
.updates-scope {
  min-width: 0;
}

.aside-block {
  padding: 18px;
  margin-bottom: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.aside-title {
  font-size: 15px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.aside-subtitle {
  font-size: 14px;
  font-weight: 600;
  margin-top: 12px;
}

.aside-text {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

.aside-text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.aside-list {
  font-size: 14px;
  color: var(--color-muted);
}

.aside-list li {
  padding: 6px 0 6px 14px;
  position: relative;
  border-bottom: 1px dashed var(--color-line);
}

.aside-list li:last-child {
  border-bottom: 0;
}

.aside-list li::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--color-accent);
}

.aside-key {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
}

.aside-footnote {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-muted);
}

/* 相邻栏目 */
.nearby-nav {
  margin-top: 40px;
}

.nearby-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.nearby-item {
  min-width: 0;
}

.nearby-item a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 16px;
  font-size: 15px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.nearby-item a:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

/* ==========================================================================
   pages — 条目字段说明
   ========================================================================== */

.field-table-section {
  min-width: 0;
}

.field-figure {
  margin: 18px 0 22px;
}

.field-figure img {
  aspect-ratio: 16 / 7;
}

.field-table__head,
.field-table__row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1.5fr) minmax(0, 1.2fr) minmax(0, 1.2fr);
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
}

.field-table__head {
  border-bottom: 2px solid var(--color-line-strong);
}

.field-table__row:last-child {
  border-bottom: 0;
}

.field-table__cell {
  min-width: 0;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

.field-table__head .field-table__cell {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
}

.field-table__cell--name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

/* 收录边界 */
.boundary-section {
  min-width: 0;
}

.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.boundary-col {
  min-width: 0;
  padding: 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.boundary-col--in {
  border-top: 3px solid var(--color-accent);
}

.boundary-col--out {
  border-top: 3px solid var(--color-line-strong);
}

.boundary-col__title {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.boundary-list {
  font-size: 14px;
  color: var(--color-muted);
}

.boundary-list__item {
  position: relative;
  padding: 7px 0 7px 16px;
  line-height: 1.75;
  border-bottom: 1px dashed var(--color-line);
}

.boundary-list__item:last-child {
  border-bottom: 0;
}

.boundary-list__item::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--color-accent);
}

.boundary-list__item--out::before {
  color: var(--color-line-strong);
}

.faq-section {
  min-width: 0;
}

/* ==========================================================================
   pages — 查阅路径指引
   ========================================================================== */

.layout-main {
  min-width: 0;
}

.layout-side {
  min-width: 0;
}

.step-list {
  margin-top: 20px;
  counter-reset: step;
}

.step-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 18px;
  margin-bottom: 12px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.step-item__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 14px;
  color: var(--color-accent);
  background-color: rgba(217, 122, 52, 0.08);
  border: 1px solid rgba(217, 122, 52, 0.3);
  border-radius: var(--radius-sm);
}

.step-item__body {
  min-width: 0;
}

.step-item__name {
  font-size: 16px;
  font-weight: 600;
}

.step-item__action {
  margin-top: 6px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.8;
}

.step-item__output {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.media-figure {
  margin-top: 22px;
}

.media-figure img {
  aspect-ratio: 16 / 7;
}

/* 常见查阅疑问分组 */
.faq-group {
  padding: 18px;
  margin-top: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.faq-group__title {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.faq-group .faq-item {
  border: 0;
  border-bottom: 1px dashed var(--color-line);
  border-radius: 0;
  box-shadow: none;
  background-color: transparent;
}

.faq-group .faq-item:last-child {
  border-bottom: 0;
}

.faq-group .faq-item__q {
  padding-left: 0;
  padding-right: 0;
}

.faq-group .faq-item__a {
  padding-left: 0;
  padding-right: 0;
  border-top: 0;
  padding-top: 0;
}

.section__footnote {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-muted);
}

/* 术语 / 提示列表（侧栏与正文辅助） */
.term-list {
  font-size: 14px;
}

.term-list__name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.term-list__desc {
  margin: 2px 0 12px;
  color: var(--color-muted);
  line-height: 1.7;
}

.tip-list {
  font-size: 14px;
  color: var(--color-muted);
}

.tip-list__item {
  position: relative;
  padding: 7px 0 7px 16px;
  line-height: 1.75;
  border-bottom: 1px dashed var(--color-line);
}

.tip-list__item:last-child {
  border-bottom: 0;
}

.tip-list__item::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--color-accent);
}

/* 相邻栏目（指引页） */
.section-adjacent {
  min-width: 0;
}

.adjacent-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.adjacent-item {
  min-width: 0;
}

.adjacent-item a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 16px;
  font-size: 15px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.adjacent-item a:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-raise);
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  padding-top: 48px;
}

.error-hero {
  padding-bottom: 32px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--color-line);
}

.error-hero__code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.error-hero__title {
  margin-top: 10px;
  font-size: 30px;
  font-weight: 600;
}

.error-hero__text {
  max-width: 640px;
  margin-top: 12px;
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.85;
}

.error-hero__action {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  margin-top: 20px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-ink);
  border-radius: var(--radius-lg);
  transition: background-color 0.18s ease;
}

.error-hero__action:hover {
  color: #ffffff;
  background-color: var(--color-accent);
}

.error-paths {
  margin-bottom: 24px;
}

.error-paths__title {
  font-size: 20px;
  font-weight: 600;
}

.error-paths__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.error-paths__item {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.error-paths__link {
  font-size: 15px;
  font-weight: 600;
}

.error-paths__desc {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ==========================================================================
   responsive — 900px / 600px 两档断点
   ========================================================================== */

@media (max-width: 900px) {
  .site-main {
    padding: 24px 18px 44px;
  }

  .fact-bar {
    padding: 8px 18px;
  }

  .site-header__inner {
    padding: 10px 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0 18px;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 14px;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list__link {
    width: 100%;
    padding: 0 12px;
    border-bottom: 1px solid var(--color-line);
    border-radius: 0;
  }

  .nav-list__link.is-current {
    border-bottom-color: var(--color-line);
    background-color: rgba(217, 122, 52, 0.07);
  }

  .hero-index {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-index__title {
    font-size: 28px;
  }

  .direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
    padding: 32px 18px 22px;
  }

  .site-footer__bottom {
    padding: 14px 18px 24px;
  }

  /* 内页两栏统一转单列，主内容在前 */
  .page-layout,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .direction-bar__list {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .direction-bar__link {
    border-left: 1px solid var(--color-line);
    border-bottom: 3px solid transparent;
  }

  .direction-bar__link:hover,
  .direction-bar__link.is-active {
    border-left-color: var(--color-line);
    border-bottom-color: var(--color-accent);
  }

  .field-boundary__columns,
  .rank-feature__columns,
  .boundary-columns {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .fact-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .site-main {
    padding: 20px 14px 40px;
  }

  .site-header__inner {
    padding: 10px 14px;
  }

  .brand__text {
    font-size: 17px;
  }

  .page-title,
  .error-hero__title {
    font-size: 23px;
  }

  .hero-index__title {
    font-size: 23px;
  }

  .section-head__title,
  .section-title,
  .section__title {
    font-size: 19px;
  }

  .hero-index__shortcuts {
    grid-template-columns: minmax(0, 1fr);
  }

  .direction-grid,
  .site-index__grid,
  .boundary-columns {
    grid-template-columns: minmax(0, 1fr);
  }

  .field-panel__row {
    grid-template-columns: 82px minmax(0, 1fr);
  }

  .update-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .update-row__name {
    font-size: 15px;
  }

  .entry-row {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .entry-row__meta,
  .entry-row__field {
    grid-column: 2;
  }

  .timeline-row {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
  }

  .timeline-row__media {
    width: 72px;
  }

  .field-table__head {
    display: none;
  }

  .field-table__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 0;
  }

  .step-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding: 16px;
  }

  .faq-item__question,
  .faq-item__q {
    padding: 13px 14px;
  }

  .faq-item__answer,
  .faq-item__a {
    padding: 12px 14px 14px;
  }

  .side-panel,
  .aside-block,
  .direction-group,
  .field-boundary__col,
  .rank-feature__col,
  .boundary-col,
  .nature-item,
  .next-card,
  .faq-group {
    padding: 16px;
  }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 28px 14px 20px;
  }

  .site-footer__bottom {
    padding: 14px 14px 22px;
  }

  .error-hero__action {
    width: 100%;
    justify-content: center;
  }
}